00:01
Hi.
00:02
Here in this given problem this is a square at which, at the corners of which, suppose the corners are a, b, c and d.
00:17
At three of the corners there are three equal negative charges, minus q each.
00:27
And we have to find net electric field at its center.
00:36
Suppose side of the square is that is a.
00:56
So if this is the center at which we have to find electric field, it's diagonal ac that will be a root 2 and a .o, half of the diagonal a root 2 by 2.
01:17
Now we know electric field goes towards the negative.
01:20
Charge.
01:22
So, here two electric fields, e at o because of b, e at o because of d.
01:31
These two electric fields are equal in magnitude...